Professional Electroplated Zinc Coating , Black Dacromet Plating Alkali Resistant JH-9321 top coat
1) The main ingredient is water-base inorganic silica , mixed with corrosion protection assistant.
2) The product cost is low.
3) The coating layer is smooth, weak acid and alkali resistant.
Technical Data:
| No. | Item | Data |
| 1 | Appearance | Black , fine and smooth |
| 2 | Viscosity | ≥50s |
| 3 | PH | 8.0-9.0 |
| 4 | Thickness of dry film | 10-20 (micron) |
| 5 | Hardness | ≥1 |
| 6 | Adhesion(degree) | ≤1 |
| 7 | Bend | 1(mm) |
| 8 | heat and humidity resistance | 240 (h) |
Instructions and attention:
1. Dip coating,Spray coating etc.
2. It should be stirred fully befor usage; distilled water or deionized water can be used to adjust viscosity ;Operating viscosity:30-60s.
3. When the environment humidity higher than 85%,can add certain industrial alcohol to adjust viscosity
4. Curing condition: 80℃/10min+140℃/30min
5. Cleaning appliance: running water can be used
6. Avoid acid substances, or polymerization and deterioration will happen.
7. This product can be used alone,the coated surface request oil free,dust free and dry,the better make pre-treatment of degreasing,derusting,and phosphating.
Processing method:
A 1 base-coat+ 1 Top coat
B 2 base-coat+ 1 Top coat (heavy corrosion protection)
Process Parameter:
Dip Coating Temperature RT
Operateing Viscosity 45-60 S
Centrifuge 210~270 RPM/min 10s X 4-8 times
( Centrifuge device can not be mix used with spin dyrer )
Spray Coating Temperature RT
Operateing Viscosity 30~40 S
Curing: 80℃ 10min + 140℃ 20—30min
Corrosion protection of b process flow
Corrosion resistance: ≥1500h (NSS)
Sea water resistance: 25℃≥1500h
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